9894268886640 has 80 divisors (see below), whose sum is σ = 30688986541056. Its totient is φ = 2637030585600.

The previous prime is 9894268886633. The next prime is 9894268886657. The reversal of 9894268886640 is 466888624989.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×9894268886640² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10818376 + ... + 11697255.

Almost surely, 2^{9894268886640} is an apocalyptic number.

It is an amenable number.

9894268886640 is an abundant number, since it is smaller than the sum of its proper divisors (20794717654416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9894268886640 is a wasteful number, since it uses less digits than its factorization.

9894268886640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22517478 (or 22517472 counting only the distinct ones).

The product of its (nonzero) digits is 2293235712, while the sum is 78.

The spelling of 9894268886640 in words is "nine trillion, eight hundred ninety-four billion, two hundred sixty-eight million, eight hundred eighty-six thousand, six hundred forty".